I have posted this before..
According to Johnson's "Gunmakers of Illinois" Vol II:
Hasdell worked at 150 St John Road, London until he immigrated to Chicago. From 1871-1887 he was located at 20 E Madison.
In 1881 he was challenged in the American Field by LC Smith of Baker guns. LC Smith wrote a public letter in which he wagered $50 that his guns had a better choke than Hasdell.
Hasell made long taper chokes.
There is at least one example of a WC Scott with Hasdell's name on the barrels. An old ad shows him offering guns for $100-$300 (very expensive). He apparently had a real following in Chicago.
As Daryl stated, it is impossible to determine how much work Hasdell did to a gun.
Pete
